Properties of the Number 28389

Twenty-Eight Thousand Three Hundred Eighty-Nine

Basics

Value: 28388 → 28389 → 28390

Parity: odd

Prime: No

Previous Prime: 28387

Next Prime: 28393

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 9463

Divisors: 1, 3, 9463, 28389

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111011100101

Octal: 67345

Duodecimal: 14519

Hexadecimal: 6ee5

Square: 805935321

Square Root: 168.49035580709062

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Indices of primes in the hexanacci numbers sequence A000383. A247192

Number of unlabeled trees covering 2n nodes, half of which are leaves. A359398

Number of trees with n nodes and 9 leaves. A55296

Number of prime quadruples < 10ⁿ, where a prime quadruple means 4 successive primes {p, p', p'', p'''} with p''' = p + 8. A55738

Number of graphical partitions of simple Eulerian graphs (partitions given by the degrees of vertices of simple (no loops or multiple edges) graphs having only vertices of even degrees) having n edges. A69831

Number of strings of numbers x(i=1..n) in 0..4 with sum i·x(i)⁴ equal to n·256. A184843

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 245", based on the 5-celled von Neumann neighborhood. A271006

G.f. A(x) where A000081(x) = x·A(A000081(x)). A185168

The 5x + 1 sequence beginning at 7. A28389